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Explosion-proof low pressure axial fans (duct installation)

HRFD 250/4 EX

HRFD 250/4 EX

High efficiency axial fan 3-ph., explosion proof, air flow direction 'B', II 2G Ex h IIB + H2 T3 Gb

Ref.-No. 00470

Features

flanges on both ends, directly driven, explosion proof according to ATEX. Cylindrical duct in galvanised sheet steel covering impeller with two flanges on both ends. Dimensions and flange fixing holes to DIN 24155. Terminal box on outer casing. High efficient, profiled impeller with 7 blades, dynamically balanced to DIN ISO 1940 and VDI 2060 class 6.3, manufactured from impact resistant anti static polymers. Suitable for -30°C to +40°C. Electrical resistance of less than 1 Ohm. Totally enclosed, maintenance free 3-phase squirrel cage motor, low noise sealed for life ball bearings, not controllable. Explosion proof execution according to ATEX.

Technical Data

General Information
Ref.-No.:00470
Type:HRFD 250/4 EX
Flow rate free-blowing:1070 m³/h
RPM:1355 min-1
Number of poles:4
Voltage:400 V , 3 W , 50 ph
Rated current (FLC) uncontrolled:0.37 A
Nominal power:120 W
Max. air flow temperature:40 °C
Explosion proof:
IP protection category:54
Insulation class:F
PRODUCT_DETAILPAGE_wheel_diameter:280
Weight:7 kg
Wiring diagram no.:470
Acoustic data
Case breakout 44 dB(A) in 4 m